Fungus-Based MnO/Porous Carbon Nanohybrid as Efficient Laccase Mimic for Oxygen Reduction Catalysis and Hydroquinone Detection

Ge, Haoran; Zhang, Hailong

doi:10.3390/nano12091596

Cited by 9 publications

(5 citation statements)

References 62 publications

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“…The XPS survey spectrum (Figure S3A) shows the elements of Co, Mn, and O observed on CoMnO x surface. As shown in Figure S3B, the peaks of 641.91 eV and 653.54 eV should be ascribed to Mn 2p 3/2 and Mn 2p 1/2 of Mn 3+ , and the peaks of 643.10 eV and 654.38 eV are attributed to Mn 2p 3/2 and Mn 2p 1/2 of Mn 2+ [13,15]. Figure S3C shows that the peaks of 796.94 eV and 782.79 eV are associated with Co 2p 1/2 and 2p 3/2 of Co 2+ , and the peaks at 795.37 eV and 780.37 eV for Co 2p 1/2 and 2p 3/2 are associated with Co 3+ [34,35].…”

Section: Synthesis and Characterization Of Comno X Nanoflowersmentioning

confidence: 93%

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CoMnOx Nanoflower-Based Smartphone Sensing Platform and Virtual Reality Display for Colorimetric Detection of Ziram and Cu2+

Song,

Wang,

Zhang

et al. 2024

Biosensors

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Transition metal doping is an ideal strategy to construct multifunctional and efficient nanozymes for biosensing. In this work, a metal-doped CoMnOx nanozyme was designed and synthesized by hydrothermal reaction and high-temperature calcination. Based on its oxidase activity, an “on-off-on” smartphone sensing platform was established to detect ziram and Cu2+. The obtained flower-shaped CoMnOx could exhibit oxidase-, catalase-, and laccase-like activities. The oxidase activity mechanism of CoMnOx was deeply explored. O2 molecules adsorbed on the surface of CoMnOx were activated to produce a large amount of O2·-, and then, O2·- could extract acidic hydrogen from TMB to produce blue oxTMB. Meanwhile, TMB was oxidized directly to the blue product oxTMB via the high redox ability of Co species. According to the excellent oxidase-like activity of CoMnOx, a versatile colorimetric detection platform for ziram and Cu2+ was successfully constructed. The linear detection ranges for ziram and Cu2+ were 5~280 μM and 80~360 μM, and the detection limits were 1.475 μM and 3.906 μM, respectively. In addition, a portable smartphone platform for ziram and Cu2+ sensing was established for instant analysis, showing great application promise in the detection of real samples including environmental soil and water.

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Section: Synthesis and Characterization Of Comno X Nanoflowersmentioning

confidence: 93%

“…In recent years, metals [10,11], metal composites [12][13][14], and carbon-based materials [15] have all been discovered and designed as nanomaterials with enzyme-like catalytic effects. Nanozymes have been extensively studied in biosensors, environmental protection, disease diagnosis, and antimicrobial agents [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

CoMnOx Nanoflower-Based Smartphone Sensing Platform and Virtual Reality Display for Colorimetric Detection of Ziram and Cu2+

Song,

Wang,

Zhang

et al. 2024

Biosensors

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“…Many nanomaterials, such as MnO 2 [ 7 ], UiO-67-Cu 2+ [ 8 ], Co 3 O 4 nanoplates [ 9 ], and PPy NPs [ 10 ], have shown enzyme-like catalytic ability and have been used in colorimetric detection. Ge et al [ 11 ] prepared MnO/PC nanohybrid material, which was used for colorimetric detection of HQ. The experiment yielded a desirable linear relationship within the range of 0–50 µM, and a detection limit of 0.5 µM was achieved.…”

Section: Introductionmentioning

confidence: 99%

“…Ge et al [11] prepared MnO/PC nanohybrid material, which was used for colorimetric detection of HQ. The experiment yielded a desirable linear relationship within the range of 0-50 µM, and a detection limit of 0.5 µM was achieved.…”

Section: Introductionmentioning

confidence: 99%

Biocompatible Palladium Nanoparticles Prepared Using Vancomycin for Colorimetric Detection of Hydroquinone

Gao

et al. 2023

Polymers

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Hydroquinone poses a major threat to human health and is refractory to degradation, so it is important to establish a convenient detection method. In this paper, we present a novel colorimetric method for the detection of hydroquinone based on a peroxidase-like Pd nanozyme. The vancomycin-stabilized palladium nanoparticles (Van-Pdn NPs, n = 0.5, 1, 2) were prepared using vancomycin as a biological template. The successful synthesis of Van-Pdn NPs (n = 0.5, 1, 2) was demonstrated by UV-vis spectrophotometry, transmission electron microscopy, and X-ray diffraction. The sizes of Pd nanoparticles inside Van-Pd0.5 NPs, Van-Pd1 NPs, and Van-Pd2 NPs were 2.6 ± 0.5 nm, 2.9 ± 0.6 nm, and 4.3 ± 0.5 nm, respectively. Furthermore, Van-Pd2 NPs exhibited excellent biocompatibility based on the MTT assay. More importantly, Van-Pd2 NPs had good peroxidase-like activity. A reliable hydroquinone detection method was established based on the peroxidase-like activity of Van-Pd2 NPs, and the detection limit was as low as 0.323 μM. Therefore, vancomycin improved the peroxidase-like activity and biocompatibility of Van-Pd2 NPs. Van-Pd2 NPs have good application prospects in the colorimetric detection of hydroquinone.

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“…and heteroatoms (B, N, F, P, S, etc.) in carbon-based nanomaterials have synergistic effects to change the topical work function of materials, resulting in enhanced ORR performance [16,17].…”

Section: Introductionmentioning

confidence: 99%

Self-Templating Synthesis of N/P/Fe Co-Doped 3D Porous Carbon for Oxygen Reduction Reaction Electrocatalysts in Alkaline Media

Yao

Huang

2022

Nanomaterials

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The development of low-cost, highly active, and stable oxygen reduction reaction (ORR) catalysts is of great importance for practical applications in numerous energy conversion devices. Herein, iron/nitrogen/phosphorus co-doped carbon electrocatalysts (NPFe-C) with multistage porous structure were synthesized by the self-template method using melamine, phytic acid and ferric trichloride as precursors. In an alkaline system, the ORR half-wave potential is 0.867 V (vs. RHE), comparable to that of platinum-based catalysts. It is noteworthy that NPFe-C performs better than the commercial Pt/C catalyst in terms of power density and specific capacity. Its unique structure and the feature of heteroatom doping endow the catalyst with higher mass transfer ability and abundant available active sites, and the improved performance can be attributed to the following aspects: (1) Fe-, N-, and P triple doping created abundant active sites, contributing to the higher intrinsic activity of catalysts. (2) Phytic acid was crosslinked with melamine to form hydrogel, and its carbonized products have high specific surface area, which is beneficial for a large number of active sites to be exposed at the reaction interface. (3) The porous three-dimensional carbon network facilitates the transfer of reactants/intermediates/products and electric charge. Therefore, Fe/N/P Co-doped 3D porous carbon materials prepared by a facile and scalable pyrolysis route exhibit potential in the field of energy conversion/storage.

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Fungus-Based MnO/Porous Carbon Nanohybrid as Efficient Laccase Mimic for Oxygen Reduction Catalysis and Hydroquinone Detection

Cited by 9 publications

References 62 publications

CoMnOx Nanoflower-Based Smartphone Sensing Platform and Virtual Reality Display for Colorimetric Detection of Ziram and Cu2+

CoMnOx Nanoflower-Based Smartphone Sensing Platform and Virtual Reality Display for Colorimetric Detection of Ziram and Cu2+

Biocompatible Palladium Nanoparticles Prepared Using Vancomycin for Colorimetric Detection of Hydroquinone

Self-Templating Synthesis of N/P/Fe Co-Doped 3D Porous Carbon for Oxygen Reduction Reaction Electrocatalysts in Alkaline Media

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